Incipio IPH-885 offGRID for iPhone 5 - Retail Packaging - Black Compatible with iPhone 5 / iPhone 5s / iPhone SE Two portable lithium polymer batteries for 4000mAh total power (2000mAh per battery) Backup battery charger charges both removable batteries at the same time and when at least one of the removable batteries is in place, acts as a portable backup battery for additional devices Easy to install rigid Plextonium bumper and back case provide ultra-slim protection Sync and charge with included cable